(19)

(11)

EP 4 164 983 A1

(12)

(43) Date of publication: 19.04.2023 Bulletin 2023/16 (21) Application number: 21730950.9 (22) Date of filing: 09.06.2021

(51) International Patent Classification (IPC):  C01B 3/36(2006.01) C01B 3/52(2006.01) C01B 32/50(2017.01) C01B 3/48(2006.01) B01D 53/14(2006.01) B01D 53/047(2006.01) (52) Cooperative Patent Classification (CPC): C01B 3/36; C01B 3/48; C01B 3/52; C01B 2203/025; C01B 2203/0283; C01B 2203/0405; C01B 2203/043; C01B 2203/0415; C01B 2203/0475; C01B 2203/0877; C01B 2203/0894; C01B 2203/1241; C01B 2203/86; B01D 53/1475; B01D 2252/20489; B01D 2252/20447; B01D 2252/2056; B01D 2256/22; B01D 53/047; Y02C 20/40; Y02P 20/151; Y02P 30/00; Y02P 20/133 (86) International application number: PCT/EP2021/065433 (87) International publication number: WO 2021/250083 (16.12.2021 Gazette 2021/50)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 10.06.2020 EP 20179362 (71) Applicant: Shell Internationale Research Maatschappij B.V. 2596 HR The Hague (NL)	(72) Inventors: GOSWAMI, Tathagata 1031 HW Amsterdam (NL) SCHOUWENAAR, Robert 1031 HW Amsterdam (NL) TURLEY, Michael 1031 HW Amsterdam (NL) FELSKE, Sven 1031 HW Amsterdam (NL) (74) Representative: Shell Legal Services IP  PO Box 384 2501 CJ The Hague 2501 CJ The Hague (NL)